神戸大学附属図書館デジタルアーカイブ
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https://doi.org/10.24546/81011548
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2024-04-25
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81011548 (fulltext)
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メタデータID
81011548
アクセス権
open access
出版タイプ
Version of Record
タイトル
Subduction of oceanic plate irregularities in south-central Mexico and the influence on subduction seismicity
著者
Marina Manea ; Yoshioka, Shoichi ; Vlad Constantin Manea
著者名
Marina Manea
著者ID
A1693
研究者ID
1000020222391
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=bf78614b9c047561520e17560c007669
著者名
Yoshioka, Shoichi
吉岡, 祥一
ヨシオカ, ショウイチ
所属機関名
都市安全研究センター
著者名
Vlad Constantin Manea
収録物名
神戸大学都市安全研究センター研究報告
巻(号)
21
ページ
184-194
出版者
神戸大学都市安全研究センター
刊行日
2017-03
公開日
2019-05-30
抄録
It is known that oceanic plates morphology is not a simple one, but rather complicated by a series of irregularities as seamounts, fracture zones and mid-ocean ridges. These features present on the oceanic floor form part of the fabric of oceanic crust, and once formed they move together with the oceanic plates until eventually enter a subduction zone. Some improvements have been done in the last decades in understanding the influence of seamount subduction on the forearc morphology and also on occurrence of large subduction earthquakes. Although the Cocos plate offshore Mexico present a series of multiple small height seamount chains that enter into subduction well as large fracture zones (i.e. Tehuantepec fracture zone), the understanding of the influence of these oceanic features that might play in geohazards (i.e the generation of large earthquakes)in Mexico is not yet well studied. Previous studies along the Mexican trench reveal that only a small portion of the oceanic sedimentary blanket is accreted and this margin seems to be marked by erosional processes. In the particular case of seamounts, it is not well understood for example whether the Cocos plate seamount chains are accreted to the forearc or carried down into the subduction zone, and how the forearc morphology is affected. In this study we present some preliminary results where we investigate the morphology of medium-size tolarge seamounts and fracture zones in the vicinity of the trench in south-central Mexico, and examine the possible links that might exist between these features and subduction seismicity in particular the rupture history of large subduction zone earthquakes along the Mexican margin.
キーワード
Mexican Subduction Zone
Seamounts
Fracture zones
Seismicity
Seismic Gapes
カテゴリ
都市安全研究センター
神戸大学都市安全研究センター研究報告
>
21号(2017-03)
紀要論文
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資源タイプ
departmental bulletin paper
言語
English (英語)
ISSN
1342-9167
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NCID
AA11142997
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URI
http://www.rcuss.kobe-u.ac.jp/publication/publication.html
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